Please only answer if your certain it will mean a lot I can give extra points or brain list if you like or a thanks please don’t put anything Radom or a lie thank you

It says factor each expression 49x-28?

How would you find the height of points on the circle? the topic is trigonometry.

Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?